Lifestyle and wellbeing (LS) apps represent a popular form of m-health apps that facilitate the maintenance and improvement of health by encouraging active lifestyles. This study aims to adapt the uMARS scale, developed for evaluating the quality of m-health applications, and to investigate the relationship between quality, satisfaction, and behaviour factors in LS applications. Data collection was conducted using a survey in autumn 2023, with a sample size of 157 respondents. The PLS-SEM method was employed to test the hypotheses. The results indicate that four qualitative dimensions of LS apps have a direct impact on overall satisfaction. The qualitative dimensions of LS apps, including functionality, information content and aesthetics, directly impact users’ perceived health-related knowledge, attitudes and behaviour. Furthermore, the quality dimensions indirectly influence users’ perceived health-related factors through satisfaction.